Targa "buffeting" C7 vs. C6
03-16-2019, 01:08 PM
#1
Race Director
Thread Starter
Targa "buffeting" C7 vs. C6
Anybody move from a C6 coupe to a C7 coupe and notice that the "buffetting" one can experience with the targa panel removed is quite a bit less?
Maybe it is just my excitement about my new (to me) 2015, but yesterday, for the first time since I bought the car, I removed the targa panel and did about a 15 mile cruise including local and some highway miles. I rode a few miles windows up and a few with windows down, each at varying speeds.
In my C6 (a 3LT with the one-piece cloth hatch cover), anything over 45 MPH or so with windows up introduced an annoying sort of boom effect. With windows down, that was not a problem, but once I got up to 65 MPH or so the buffeting was pretty terrible and made top-off highway cruising no fun at all.
Now, in the C7 (a 2LT with the 2-piece cloth hatch cover) with windows up there was only a very minimal booming effect which seemed to come on around 60 MPH. It was tolerable even at highway cruising speeds. With windows down I was perfectly comfortable up to about 80 MPH (which was the fastest I went on this cruise)!
I'm thinking that the more sloping roofline of the C7 reduces the volume of air getting caught up in the hatch area, and the different (and I think better) design of the hatch cover buffers the problem once air does start spilling in.
If I am not just imagining this, what an unexpected additional benefit of having moved up to the C7 world!
Comments?
Maybe it is just my excitement about my new (to me) 2015, but yesterday, for the first time since I bought the car, I removed the targa panel and did about a 15 mile cruise including local and some highway miles. I rode a few miles windows up and a few with windows down, each at varying speeds.
In my C6 (a 3LT with the one-piece cloth hatch cover), anything over 45 MPH or so with windows up introduced an annoying sort of boom effect. With windows down, that was not a problem, but once I got up to 65 MPH or so the buffeting was pretty terrible and made top-off highway cruising no fun at all.
Now, in the C7 (a 2LT with the 2-piece cloth hatch cover) with windows up there was only a very minimal booming effect which seemed to come on around 60 MPH. It was tolerable even at highway cruising speeds. With windows down I was perfectly comfortable up to about 80 MPH (which was the fastest I went on this cruise)!
I'm thinking that the more sloping roofline of the C7 reduces the volume of air getting caught up in the hatch area, and the different (and I think better) design of the hatch cover buffers the problem once air does start spilling in.
If I am not just imagining this, what an unexpected additional benefit of having moved up to the C7 world!
Comments?
The following 2 users liked this post by Rapid Fred:
GLOCK22357 (03-16-2019),
V Vette (03-16-2019)
03-16-2019, 01:12 PM
#2
Race Director
Yep. Way less. Enjoyable
03-16-2019, 01:51 PM
#3
Team Owner
Member Since: Aug 2007
Location: I live my life by 2 rules. 1) Never share everything you know. 2)
Posts: 136,148
Received 2,402 Likes
on
1,366 Posts
St. Jude Donor '11-'12-'13, '16-'17-'18
03-16-2019, 05:54 PM
#4
Race Director
Member Since: Mar 2001
Location: Bonneville Salt Flats, 223mph Aug. '04
Posts: 17,427
Received 5,216 Likes
on
3,459 Posts
Can't speak to the C6, but my C7 is certainly less than my C5.
03-16-2019, 10:16 PM
#6
Administrator
Member Since: Mar 2001
Location: In a parallel universe. Currently own 2014 Stingray Coupe.
Posts: 343,002
Received 19,301 Likes
on
13,974 Posts
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-'19-
'20-'21-'22-'23-'24
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
The C7 seems to have less buffeting than the C5s I had. Not complaining one bit.
03-16-2019, 10:34 PM
#7
Safety Car
Member Since: Mar 2009
Location: Northeast MA & Mad Beach FL
Posts: 4,101
Received 716 Likes
on
436 Posts
I agree, I noticed less turbulence with the C7 Coupe over the C6 Coupe.
Also, with either one, at highway speeds with the top off, it's much better with the windows up only 3/4 of the way, instead of all the way up.
And around town or back roads not exceeding aprox 50mph, there's a nice improvement with the windows up only 1/4 of the way.
Just my experience for what its worth
Also, with either one, at highway speeds with the top off, it's much better with the windows up only 3/4 of the way, instead of all the way up.
And around town or back roads not exceeding aprox 50mph, there's a nice improvement with the windows up only 1/4 of the way.
Just my experience for what its worth
The following users liked this post:
fsvoboda (03-16-2019)